Improved construction and rigging of trestle-trees for vessels



PATENT OFFICE.

JOHN M. HUDSON, OF NEW YORK, N. Y.

IMPROVED CONSTRUCTION AND `RIGGING 0F TRESTLE-TREES FOR VESSELS..

Speciication forming part of Letters Patent No. 56,754, dated July 31,1866.

To all whom it may concern:

Be it knownthat I, JOHN M. HUDSON, of

the city, county, and State of New York, have invented a new andimproved mode of constructing and rigging the trestle-trees of Vesselsand of adapting the connecting-rigging with the lower mast-h eads, theheel of the topmasts, and the working of the top-sails; and I do herebydeclare that the following is a full and exact description thereof,reference being had to the accompanying' drawings, and t0 the letters ofreference marked thereon.

The nature of my invention consists in putting a trestle-tree,B,0n thelower mast, X, below the upper trestle-tree, A, Figures l, 2, 4, and toextend the heel of the top-mast O, putting a band, G, around thetop-mast Y, to truss the lower yard, T, in, and placing a bridleband, E,around and over the mast-head for slinging the lower yard, T, to.

D is a projection on the ends of the lower `trestle-trees, B. F is aniron gate on the upper trestle-tree, A. H are hounds bolted on the mastX to support trestle-trees A and B. I is a wooden top resting on uppertrestle-tree, A. J represents the lowest place of top-sail yard -V inold style, Fig. 3. K is the point where lower mast-head is cut off. Lare clewlines leading to ends of yard V and down side ot' sail to theclews M or lower corners of topsail. N are spilling-'lines which goaround the sail. O is the chain-slings of lower yard, T. P is a wood tidthrough heel O of topniast Y, to support the weight resting on lowertrestles, B, and taking against the projections D on the ends ofthesame. Q is a front view of the bridle-band E. B is the chain or ropegear top-sail sheets, which hook into the topsail clews M. S is thetop-sail halyard for hoisting yard V. U is an iron band aroundtrestletrees B. Z is a parralircn to connect topsail yard V to top-mastY for hoisting and lowering, the top-sail coming all the way down thetop-mast to iron gate F on upper trestletrees, A, easing the weight andmaking it more safe in heavy weather.

The sail can be easily reefed or furled by hauling on the clew-lines L,which bring the y sail tight across the reef-bands. By hauling on thespilling-lines N the sail is boundv up to the top-sail yard V and madesecure.

W is top-mast'cross-trees for supporting topmast rigging, Fig. 1.

What I claim as my invent-ion, and desire to secure by Letters Patent,is-

I. The placing below the upper trestle-trees, A, a new pair oftrestletrees, B, on the 4lower mast, X, with the projections D on theends,

and securing trestle-trees B with the iron band U, and extending thetop-mast Y so that the heel O with iid AP, going through the heel C,will rest on trestle-tree B and take against the projections D, insteadof resting on the 'trestletrees A, which now opens with the iron gate Fto facilitate sending the top-mast Y up and down, substantially inmanner as herein described.

2. The bridle-band E over the mast-head, as herein described.

3. The combination of the foregoing with the clew-lines andspilling-lines, for the purposes `and objects herein described.

J. M. HUDSON.

Witnesses:

A. W. CoA'rEs, TowNsEND JONES.

